Flashcards
Test 1 OS
Flashcards do conjunto (88)
- 1First Programmer?Ada Lovelace
- 2Windows Putty. Linux Verison?SecPanel
- 3sudo in command controlsgoes in as admin
- 4Command to install in Linuixsudp apt-get install
- 5Commands to compile then run?javac 'filename.java'
java 'filename' - 6Command to tell you what program is running and then kill program?top
kill 'PID' - 7Command to create directory linux and widows?mkdir
- 8Command to copy in linux?cp || target dest
- 9Command to copy in windows?copy
- 10Command to move in linux?mv
- 11Command to move in windows?move
- 12Command to change directory in windows and linux?cd
- 13Command to show directory/attributes linux?ls-la
- 14Command to show directory/attributes windowsdir /w/d
- 15Command to organize directory by time linux?ls-la-t
- 16Command that lists directory contents of files and directories linux?ls
- 17Command that lists directory contents of files and directories windows?dir
- 18Command that shows everything in drive windows and linux?tree
- 19Command that shows contents in file linux?cat 'filename'
- 20Command that shows contents in file windows?type 'filename'
- 21What does pipe symbol command in windows and linux do?takes command form left and inputs command into right
- 22Command to go to root linux?cd~
- 23Command to go to root windows?cd\
- 24Command to clear terminal linux?clear
- 25Command to clear terminal windows ?cls
- 26Command to go back one folder linux?cd ../
- 27Command to go back one folder windows?cd ..\
- 28Command to take you to OS files linux?cd/
- 29Command to take you to OS files windows?%windir%
- 30Command to view command history linux?history | ls
- 31Command for manual linux?man
- 32Command to create a file linux?touch 'filename'
- 33How to point to variable to same name global variable?this.'variableName'
- 34Void in java?no return
- 35printf: d= f= s=?d= int
s = string
f = float - 36String args[]single data array of type string. Grabs data and gives it to main
- 37What is an OS?Software that allows user to control the hardware
- 38What is the linux OS architecture sections?User mode and Kernal mode
- 39What is user mode?Section where users run applications
- 40What is Kernal mode?heart of the OS
- 41Order of the architecture?Applications | system calls > device drivers > hardware
- 42What are the 5 functions of an OS?DUMPS:
Device Management
User Interface
Memory
Processor Management
Storage Management - 43UI v GUI?UI is usually black screen with white text while GUI are designed to provide easy use of computer to user
- 44Primary memory?RAM(System memory)
volitile
fastest
most expensive - 45Secondary memory?Permanent storage. USB, HD, tapes, CD
- 46Biggest secondary memory?Tapes(240GB)
- 47Maximum amount of RAM?32TB
- 48What is a file system?manages all data. Reading, writing, moving, modifying, etc.
- 49What is a block size?Section in secondary mem that can be read using one read instruction
- 50Windows block size?4mg
- 51Linux block size?1TB
- 52Windows file systems?FAT 12, 16, 32, NTFS
- 53Linux file systemsGFS, HFS, EX2,3,4, Hadoop,
- 54What is time splicing?Amount of time that OS assign to process to execute
- 55What is multitasking?ability of an OS to execute multiple tasks at what seems to be at the same time
- 56What is multiprocessing?Running code at the same time on multiple processor
- 57What is multi threading?process that cann run with other threads of the same process
- 58What is a VM?Software that can be installed on host machine to run multiple OSs
- 59Examples of VMs?Virtual Box
VMware
Hyper-V
Parallel - 60Benefits of VMs?Multiple users on one machine, if VM gets virus host will not get virus, VMs can be clones, can be ran with minimal hardware requirements
- 61Problems with VMs?If host fails all users will be disconneted and also bad decisions being made a the time of creating/installing VMs.
- 62What is a FAT table?holds address of where data is located on hard drive
- 63What is faster copy or move?copy
- 64Speeds of internet 2?88TB
- 65Command to download files over the net Linux?wget
- 66What is binary?language of all digital equiptment
- 67What is a nibble?4 bits of a byte
- 68What is a byte?sequence of bits
- 69What is a motherboard?it connects all components with cpu
- 70What types of cables are there?only 2. data and power
- 71What is ASCII?American Standard Code for Information Exchange
- 72What is IDE/PATA/ATATypes of HDs and data cable connectors
- 73What is the different between SATA and older drives?smaller and have L connectors to make sure you connect correctly
- 74What are the speeds or HDs?5400
7200
10000
15000(SCSI) - 75What is the name of the fastest supercomputer?Summit(USA)
- 76What is a NAS?network attached storage. a box with a bunch of hard drives
- 77Name types of serial portsDB9, DB15. Sends one at a time. voltage sent to data
- 78What are peripherals?components. any part connected to CPU
- 79What are input peripherals?Touch monitor, mouse, keyboard, camera, microphone
- 80What are output peripherals?printers, speakers, monitors, projectors, plotters
- 81What are input/output?touch screen monitors, fax, printers, secondary memory
- 82What are the computer types in order?microwaves > netbooks > tablet > laptop > desktop > server > mainframe > blades > supercomputers
- 83Where is Cray Inc?Seattle
- 84What does BIOS stand for?Basic Input/Output System
- 85What is a supercomputer?the largest and most powerful computers
- 86What is a blade computer?full working computer with hot-swappable parts and can be expanded
- 87What is a mainframe computer?used by large companies for critical applications, data processing with alot of users.
- 88What is a server?powerful computers with large amounts of primary and secondary storage
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- FlashCards sobre Test 1 OS, criado por Joshua Arteaga em 17-06-2018.
- Criado por
- Joshua Arteaga
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